Stair-carpet fastener.



PATENTED JAN. 17, 1905.

G. B. SHAW.

STAIR CARPET FASTENER.

APPLICATION FILED NOV. 12,1903.

UNITED STATES Patented January 17, 1905.

PATENT OFFICE.

STAlR-CARPET FASTENER.

SPECIFICATION forming part of Letters Patent No. 780,487, dated January17, 1905.

7 Application filed November 12, 1903. Serial No. 180,813.

To all whom it may concern:

Be it known that I, GEORGE B. SHAW, a citizen of the United States,residing at Allegheny,

in the county of Allegheny and State of Pennsylvania, have invented anew and useful Improvementin Stair-Carpet Fasteners,of which improvementthe following is a specification.

This invention relates to an improved staircarpet fastener; and itconsists" in the certain details of construction and combination ofparts, as will be fully described hereinafter.

In the accompanying drawings, Figure 1 is a front elevation of a portionof a stairway, showing one of my improved fasteners arranged inposition, the stair-carpet being removed therefrom, the said fastenerbeing constructed and arranged in accordance with my invention. Fig. 2is aside sectional elevation of the same. Fig. 3 is an enlargedperspective view of one of the fasteners detached from the stairway.Fig. 4: is a similar view of the clip attached to the back of the carpetand adapted to engage with the base of the fastener. Fig. 5 is a faceView of the top portion of the fastener, showing a modified form inwhich Small spurs are used to engage with the under side of the tread ofthe step.

To put my invention into practice, and thereby provide fasteners forstair-carpet that will not be seen when said carpet is placed inposition, I form from metal a top portion 1, having an opening 2 andenlarged portion 3, in which a threaded opening is placed for thereception of one end of-a bolt 4:. This bolt 4 is formed with ,right andleft hand screwthreads and an intervening integral nut 5,

in which radial openings 11 are made, by means of which a suitablepointed instrument may be inserted and the said bolt turned in eitherdirection. Connected to the lower end of the bolt4 is a piece 6, havingan opening 2, an enlarged portion 3, in which the screwopening isformed, and also spurs 7 on one face thereof. These spurs 7 are adaptedto engage with metallic clips 8, said clips bent to form a recess 9 andthe ends provided with perforations 10, by means of which the said clipsmay be fastened to the back surface of the carpet. In operation thewidth of the tread 13 and the height of the rise of the stairs arecarefully measured and the clips sewed to the back of the carpet atdistances corresponding accurately to said measurements,

two clips being used for each step and located laterally a shortdistance within the edges of the carpet. The lower end 6 of eachfastener is inserted in the recess 9 of the clips and the carpet 12 andbrought close to the rise of the stair, as will be seen by reference toFig. 1 of the drawings. The top portion of each fastener is movedbeneath the tread of the step above, and by means of the pointed toolbefore mentioned the right and left hand threaded bolt 4 is operated toelongate the fastener and bind the same in position and the sameoperation continued with the next step above. If it is desired, the topportion of the fastener may be formed with spurs 14 (see Fig. 5) toengage with the tread.

In place of the clips 8 a strip of strong fabric may be sewed to theback of the carpet in a manner that will form pockets for the receptionof the lower ends of the fasteners.

Various slight modifications and changes may be made in the details ofconstruction without departing from the spirit of the invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is j 1. The herein-described fastener forstaircarpets, consisting of the upper and lower sections, the one joinedto the other by means of a right and left hand screw bolt, and a meansfor connecting the lower end to the rear surface of the carpet, as andfor the purpose described.

2. A stair-carpet fastener, consisting of the upper portion 1, the rightand left hand screw bolt 4 and means for operating the same, the lowerportion 6 connected to said bolt, and provided with spurs 7, the clip 8attached to the'back of the carpet and engaging with the said spurs andwith the lower portion 6 of the fastener, all arranged and combined forservice substantially as and for the purpose described.

In testimony .whereof I have hereunto signed my name in the presence oftwo subscribing witnesses. v

GEORGE B. SHAW. In presence of M. HUNTER, L. BoUL'roN.

